Good plan. The easiest anchoring to implement would be to simply click "Anchor" and the boat stops drifting, or turning. With more work I could make it swing downwind of the anchor and come to rest facing into the wind and keep drifting a bit side to side as the wind shifts. And of course it would be more work to make a visible and snagable anchor rope. But in the real world we all wish we could just make the boat stay exactly where it is without a rope to get in the way, so I'll probably just start with that. That will be the fastest way to get anchoring working so I can put that out in a fairly quick update, and I can make it more realistic as part of a larger update.